Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training,
learning paths, books, tutorials, and more.

Centralized Call Processing Redundancy

This chapter reviews the mechanisms for providing call survivability and device failover in remote sites. This includes the configuration of Cisco IOS routers as Survivable Remote Site Telephony (SRST) gateways and the use of Cisco Unified Communications Manager Express in SRST mode.

Options

This section reviews the mechanisms for providing call survivability and device failover in remote sites. SRST and MGCP gateway fallback are the key components to deliver fail-safe communication services.

To use SRST as your fallback mode on an MGCP gateway, SRST and MGCP fallback must be configured on the same gateway. SIP SRST provides a basic set of features to SIP-based IP Phones. It has to be enabled and configured ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training,
learning paths, books, interactive tutorials, and more.